1. A vulnerability that presents itself very rarely
2. If it presents itself, it is fatal to the organization
So, few targets are affected, but the outsized effect means that the overall economic impact is not insignificant. How does one keep track of that?
One method is to use a sort of "kirchhoff's law" approach, similar to google page rank. The electrical analogy would be:
- the attacker has a high potential, let's say 1000V. that attacker is the root of a rose tree, going from top to bottom, branching out towards the bottom.
- nodes impossible to exploit present edges with infinite resistance
- nodes that can be exploited present finite resistance (perhaps very low)
- once a node is exploited, its node branches out to other things that now become accessible and may or may not be exploited
- real economic impact presents a connection to ground, measured as 1/($economic impact) ohms resistance
Once you have a structure like that, you can measure the hypothetical current that would be flowing, and measure the severity of such exploits.
Sometimes a single path through a complex system can blow up vital, important parts, and this could be one way to measure it in some sort of objective manner.
When does something become a ground can be very difficult to figure out with the above complexity.
CVE should just be far more granular instead of flagging alert for anything using zlib
Security can be a major pain in the ass, and it's pretty often we see CVEs that were low valued suddenly become more urgent when someone finds a better way to use them as an exploit.
Anyone who's ever done even a beginner CTF knows that achieving code execution is a big deal.